@max, indeed, /asset-cleanup/ belongs to Asset CleanUp and stores the cached CSS/JS in case you have used options such as minify/combine CSS/JS. Technically, any asset that needs to be optimized is stored there, as the original (unoptimized) files are obviously left intact, wherever they are stored (e.g. the active theme, other plugins).
As I explained in this post (please check it out), the files are still stored there in case you have cached pages (e.g. from a plugin like WP Fastest Cache that you’re using (or used), or an internal hosting caching system) that make reference to those files. You don’t want Asset CleanUp to automatically delete those files on reset and then when a guest visitor accessed your website, they will see a broken layout. You’ll have to manually delete that folder if you believe all your pages have the caching renewed and no references will be made to /wp-content/cache/asset-cleanup/ directory.
As for the /tmpWpfc/ and /wpfc-minified/, they’re belonging to WP Fastest Cache which stores the caching pages there. The index.html file (which is likely empty) is there for a reason and it’s to prevent the listing of the directories (in case it’s not disabled in Apache or whatever server you’re using) from showing up when someone is directly viewing /wp-content/cache/
Hope it helps and hopefully, you will give the plugin another try someday 😉
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This reply was modified 6 years, 8 months ago by
Gabe Livan.